The typing speed increase wasn't my main concern, it is just a side-effect that I felt would be easily measurable and that some people might care about. I also

The typing speed increase wasn't my main concern, it is just a side-effect that I felt would be easily measurable and that some people might care about. I also wanted to get an estimate for how long it would take me to become accustomed to the new keyboard, so measuring typing speed in a rigorous, empirical way seemed the best option. The main reason I did this was ergonomics.